... the area is not suitable for planting this rice, so rare and precious black rice. Black rice extract is a water-soluble natural pigment extracted from black rice. It belongs to anthocyanins and is mainly...

sodium metabisulfite preservative As one of the important food additives, sodium metabisulfite is widely used as preservative in food industry. Soy sauce generally contain preservatives sodium benzoate, bread and soy products are often added preservatives...